ASTROSAT CZTI

Data Quality Report

Orbit 13836

Creation date: 2024-06-27T16:46:43.404183
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A04_199T01_9000002040_13836cztM0_level2.evt modeM0/AS1A04_199T01_9000002040_13836cztM0_level2_quad_clean.evt
Size (bytes)453,075,84089,418,240
Size432.1 MB 85.3 MB
Events in quadrant A3,182,345574,061
Events in quadrant B3,173,640594,773
Events in quadrant C3,051,753574,481
Events in quadrant D3,894,929534,158

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0132813
B0132452
C0128092
D0158122

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6163891.444102%
B6163671.087133%
C6163220.356969%
D6163681.103359%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 8654 6166 26 26 0.30% 0.42%
B 8654 6165 6 6 0.07% 0.10%
C 8654 6166 0 0 0.00% 0.00%
D 8654 6166 59 59 0.68% 0.96%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 9 143 103439 651.89 776 761 157.5
A 11 29 54614 341.91 776 761 157.5
A 15 69 17571 106.73 776 761 157.5
B 3 64 25848 169.82 786 768 147.7
B 0 219 23198 151.88 786 768 147.7
B 12 111 16796 108.53 786 768 147.7
C 3 233 88657 496.42 760 763 177.1
C 13 61 5451 26.48 760 763 177.1
C 4 175 2127 7.7 760 763 177.1
D 10 157 534197 2935.06 747 726 181.8
D 1 52 316623 1738.01 747 726 181.8
D 5 222 120201 657.33 747 726 181.8

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter